InAppStory - Engage your customers with Stories right from your app or mobile web product with InAppStory.
Live Chat by Sumo.com - Instantly communicate with customers, prospects & visitors
Storyly - Bring superb stories to your app
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
Zuck.js - JavaScript library that lets you add Stories everywhere
GoSquared Live Chat - Beautiful, simple, and free live chat for your website